CN101133774A - Method for separating phosvitin from fowl eggs - Google Patents
Method for separating phosvitin from fowl eggs Download PDFInfo
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- CN101133774A CN101133774A CNA200710046474XA CN200710046474A CN101133774A CN 101133774 A CN101133774 A CN 101133774A CN A200710046474X A CNA200710046474X A CN A200710046474XA CN 200710046474 A CN200710046474 A CN 200710046474A CN 101133774 A CN101133774 A CN 101133774A
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- phosvitin
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- lipovitellinin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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Abstract
The present invention relates to a method for separating phosritin from egg, belonging to the field of food engineering technology. Said method includes the following technology. Said method includes the following steps: firstly, taking out egg yolk from egg, making its egg-yolk lipoprotein be separated from water-soluble egg-white protein to obtain crude egg-yolk lipoprotein, mixing the crude egg-yolk lipoprotein with an iron-based inorganic nano material with iron atom affinity activity site to make them produce interaction and make the correspondent phosritin be adsorbed on the iron-based nano material, finally, making them undergo the process of boiling treatment so as to obtain the invented phosritin.
Description
Technical field
The present invention relates to the method in a kind of Food Engineering Development field, specifically is the separation method of phosvitin in a kind of birds, beasts and eggs.
Background technology
As everyone knows, birds, beasts and eggs such as egg, duck's egg have abundant nutrition and are worth, not only contain the necessary protein of human body, but also contain multiple bioactive ingredients, comprising: livitin, lysozyme, ovum siderophillin, egg yolk lecithin, avidin, ovalbumin etc.Wherein, the protein that phosphorylation degree is the highest, promptly phosvitin is one of protein main in the yolk particle, account for 16% of yolk particle gross weight, its relative molecular weight is 35000, nitrogenous 11.9%, phosphorous 9.7%, account for 80% of yolk total phosphorus content, carbohydrate containing 6.5%.Amino acid analysis shows that phosvitin is made up of 217 amino acid residues, and wherein 124 is serine residue, and 56%, 98% the serine residue that accounts for its total amino acid content combines with phosphate group.
The specificity combination can effectively stop in the yolk phosphatide by the iron cationic oxidation between phosphate groups that has in the phosvitin structure and cation, so it can be used as good antioxidants.The electrostatic repulsion of the phosphate radical in the phosvitin structure is very big to its emulsibility influence simultaneously, and pH is that 7.0 o'clock its emulsion stabilities are better than bovine serum albumin(BSA), so phosvitin is a kind of good antioxidant from natural food and emulsifying agent.Simultaneously, phosvitin also has bactericidal action after heating.This bactericidal action metal-chelating effect strong with it is closely related with higher surface activity.Under certain heat treatment process, cell membrane matrix can be weakened, and makes the metal ion that is in epicyte become unstable, thereby is easy to by the phosphate radical chelating in the phosvitin structure, upsets the normal physiological metabolism of bacterial cell, plays bactericidal action.Therefore, phosvitin can be used as natural antiseptic agent and is applied in the food.As the phosvitin of phosphoric acid seryl residue resources bank, itself or hydrolysate can be used as calcium and strengthen assistant, effectively improve Fe
3+, Zn
2+Deng the nutrient bioavailability.Thereby, both improved foodsafety, increase food value again.In sum, easy separation phosvitin has boundless market application foreground from Ovum Gallus Domesticus of fowl egg.
Through the prior art literature search is found, Liu Yu, article " functional character of phosvitin and preparation method thereof research " (Food Science that Yin Yong light etc. is delivered, 2006, Vol.27, No.12) report in, the separating and extracting process of phosvitin can be divided into two classes at present, the one, adopting ammonium sulfate is the inorganic matter of representative, utilize it to combine and form the compound precipitation with magnesium ion, and then separate the method that obtains phosvitin, two are to use organic solvent such as ethanol, hexane etc. to carry out extracting.But not only process is loaded down with trivial details for these existing isolation technics, length consuming time, and need to use a large amount of chemical reagent in the separation process, directly influence the biocompatibility and the biological safety of corresponding phosvitin end product, and separating effect is also not completely as good as one wishes.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of from birds, beasts and eggs high selectivity, effectively separate the method for phosvitin with high specificity.Advantages such as it is simple and easy to do that the present invention has operating process, with low cost, and corresponding separation system biocompatibility and biological safety are good.
The present invention is achieved through the following technical solutions, and comprises the steps:
The first step is at first got Ovum Gallus Domesticus of fowl egg, and wherein lipovitellinin is separated with water-soluble ovalbumin, obtains rough lipovitellinin.
In second step, getting the iron with the affine avtive spot of iron atom with the affine avtive spot of iron atom is that inorganic nano material mixes with the rough lipovitellinin that obtains.Utilizing in the phosvitin structure in the rough lipovitellinin abundant phosphorylation site is that high selectivity, high specific chelating interact between the affine avtive spot of iron atom in the inorganic nano material skeleton structure with iron, obtain the iron based nano-material of the high phosphoprotein of specific adsorption lecithality, handle the iron based nano-material through boiling, separate the phosvitin that obtains higher degree.
The described Ovum Gallus Domesticus of fowl egg of getting is meant: choose fresh birds, beasts and eggs earlier, 4 ℃ of low temperature are preserved in refrigerator, carefully knock the egg eggshell open, with filter paper inhale remove yolk surface egg white after, needle vitellinae membrana with pin, collect the yolk content.
Described lipovitellinin of inciting somebody to action wherein separates with water-soluble ovalbumin, be meant: after in the yolk content, adding ten times of 0～4 ℃ of distilled water dilutings, the mixture that places ice-water bath to be stirred to yolk and water forms the emulsion of stable homogeneous, get above-mentioned yolk emulsion in the polytetrafluoroethylene (PTFE) centrifuge tube, descended centrifugal 5 minutes at 10000 rev/mins, the lower sediment that obtains is thick matter lipovitellinin, and the upper strata is the solubility ovalbumin.Remove the upper strata water-solubility protein, obtain rough lipovitellinin.
Described iron is that inorganic nano material mixes with the rough lipovitellinin that obtains, be meant: adding the iron that has the affine avtive spot of iron atom in the rough lipovitellinin precipitation of 75mg, the 20mg skeleton structure in the polytetrafluoroethylene (PTFE) centrifuge tube of 1.5ml is inorganic nano material, pH is that acetic acid-sodium acetate buffer solution of 6.0 is to the centrifuge tube full scale, intermittently the shake well centrifuge tube continues 30 minutes.
The described iron based nano-material that obtains the high phosphoprotein of specific adsorption lecithality, be meant: with iron is the polytetrafluoroethylene (PTFE) centrifuge tube that inorganic nano material mixes with rough lipovitellinin, under 5000 rev/mins, centrifugation 3 minutes, the lower sediment that obtains are the iron based nano-material of the high phosphoprotein of specific adsorption lecithality.
Described through boiling processing iron based nano-material, separate and obtain phosvitin, be meant: with the iron based nano-material of the high phosphoprotein of specific adsorption lecithality with after fully mixing at 1: 1 according to mass ratio between deionized water, boil under 100 ℃, the phosvitin that specificity is incorporated in the material fully dissociates.Back centrifuging and taking upper strata protein solution, by SDS-PAGE electrophoresis authenticate technology, the protein band of specific adsorption in iron based nano-material structure is described, the high-purity phosvitin standard band that provides with Sigma company compares, the principal character band meets fully, has directly proved validity of the present invention.
Compared with prior art, it is the interaction of high selectivity, high specific between the iron atom avtive spot that exists in the inorganic nano material skeleton structure that the present invention utilizes phosphate groups and iron abundant in the phosvitin structure, proposes a kind of simple and effective phosvitin separation and concentration technology.This technology not only can effectively be avoided chemical extraction agent such as a large amount of use ammonium sulfate, hexane in the process, influence the biocompatibility and the biological safety of the corresponding phosvitin that obtains, and easy and simple to handle, the operation of crucial separation process only needs 60 minutes consuming time, and is with low cost.Be about more than 80% from the phosvitin purity that obtains by this technical point, can directly apply to the deep processing of relevant consumption product.
The specific embodiment:
Below embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1: carefully knock the egg eggshell open, with filter paper inhale remove yolk surface egg white after, needle vitellinae membrana with pin, collect the yolk content.After in yolk, adding ten times of 0～4 ℃ of distilled water dilutings, be positioned over and stir 60min in the ice-water bath, lipovitellinin can be separated with water-solubility protein.Get yolk mixture in centrifuge tube, select 10000 rev/mins under, centrifugal 5 minutes, lower sediment was thick matter lipovitellinin, the upper strata is the solubility ovalbumin.Remove the upper strata water-solubility protein, obtain rough lipovitellinin.
Embodiment 2: carefully knock the egg eggshell open, with filter paper inhale remove yolk surface egg white after, needle vitellinae membrana with pin, collect the yolk content.After in yolk, adding ten times of 0～4 ℃ of distilled water dilutings, be positioned over and stir 12hour in the ice-water bath, lipovitellinin can be separated with water-solubility protein.Get yolk mixture in centrifuge tube, select under 10000 rev/mins of conditions centrifugal 30 minutes, remove upper water dissolubility ovalbumin, the lower sediment that obtains is rough lipovitellinin.
Embodiment 3: get the rough lipovitellinin precipitation of 75.0mg, the iron that adding 20.0mg has the affine avtive spot of iron atom is inorganic nano material, add the acetic acid-sodium acetate buffer solution 1.5ml about pH6.0 again, the vibration mixing, left standstill 30 minutes, and carried out the specific adsorption effect of target phosvitin.Therebetween repeatedly up and down vibration rock reaction system, make that the target separation system can be fully and have between the nano material of the affine avtive spot of iron atom and be in contact with one another.Centrifugation is 3 minutes under 5000 rev/mins of conditions of back selection, obtains being adsorbed with the iron based nano-material of phosvitin.
Embodiment 4: get the rough livetin precipitation of 50mg, the iron that adding 10mg has the affine avtive spot of iron atom is inorganic nano material, adds the NaAc cushioning liquid 1.5ml about pH6.0 again, and the vibration mixing was placed 30 minutes, carried out suction-operated.Repeatedly vibrate up and down therebetween and rock reaction system, make that yolk can be that inorganic nano material is in contact with one another with the iron with the affine avtive spot of iron atom fully, interacts.Centrifugation is 5 minutes under 5000 commentaries on classics conditions, obtains being adsorbed with the nano material of phosvitin.
Embodiment 5: get the rough livetin precipitation of 100mg, the iron that adding 50mg has the affine avtive spot of iron atom is inorganic nano material, adds the NaAc cushioning liquid 1.5ml about pH6.0 again, and the vibration mixing was placed 60 minutes, carried out suction-operated.Repeatedly vibrate up and down therebetween and rock reaction system, make that yolk can be that inorganic nano material is in contact with one another with the iron with the affine avtive spot of iron atom fully, has an effect.Centrifugation is 3 minutes under 3000 commentaries on classics conditions, obtains being adsorbed with the nano material of phosvitin.
Embodiment 6: with the iron based nano-material of the high phosphoprotein of specific adsorption lecithality with after fully mixing at 1: 1 according to mass ratio between deionized water, boil under 100 ℃, the phosvitin that specificity is incorporated in the iron based nano-material fully dissociates, and then obtains purity and be about phosvitin more than 80%.
Claims (9)
1. the separation method of phosvitin in the birds, beasts and eggs is characterized in that, comprises the steps:
The first step is at first got Ovum Gallus Domesticus of fowl egg, and wherein lipovitellinin is separated with water-soluble ovalbumin, obtains rough lipovitellinin;
Second step, getting the iron with the affine avtive spot of iron atom is that inorganic nano material mixes with the rough lipovitellinin that obtains, utilizing in the phosvitin structure in the rough lipovitellinin abundant phosphorylation site is the affine avtive spot interphase interaction of iron atom in the inorganic nano material skeleton structure with iron, obtain the iron based nano-material of the high phosphoprotein of specific adsorption lecithality, handle the iron based nano-material through boiling, separate obtaining phosvitin.
2. the separation method of phosvitin in the birds, beasts and eggs according to claim 1, it is characterized in that, the described Ovum Gallus Domesticus of fowl egg of getting, be meant: choose fresh birds, beasts and eggs earlier, 4 ℃ of low temperature are preserved in refrigerator, knock the egg eggshell open, with filter paper inhale remove yolk surface egg white after, needle vitellinae membrana with pin, collect the yolk content.
3. the separation method of phosvitin in the birds, beasts and eggs according to claim 1, it is characterized in that, described lipovitellinin of inciting somebody to action wherein separates with water-soluble ovalbumin, be meant: after in the yolk content, adding ten times of 0～4 ℃ of distilled water dilutings, the mixture that places ice-water bath to be stirred to yolk and water forms the emulsion of stable homogeneous, get above-mentioned yolk emulsion in the polytetrafluoroethylene (PTFE) centrifuge tube, centrifugal, the upper strata is the solubility ovalbumin, remove the upper strata water-solubility protein, obtain rough lipovitellinin.
4. the separation method of phosvitin is characterized in that in the birds, beasts and eggs according to claim 3, described distilled water, and its temperature is 0～4 ℃.
5. the separation method of phosvitin is characterized in that in the birds, beasts and eggs according to claim 3, and is described centrifugal, is meant: descended centrifugal 3 minutes at 10000 rev/mins.
6. the separation method of phosvitin in the birds, beasts and eggs according to claim 1, it is characterized in that, described iron is that inorganic nano material mixes with the rough lipovitellinin that obtains, be meant: adding the iron that has the affine avtive spot of iron atom in the rough lipovitellinin precipitation of 75.0mg, the 20.0mg skeleton structure in the polytetrafluoroethylene (PTFE) centrifuge tube of 1.5ml respectively is inorganic nano material, the pH value be acetic acid-sodium acetate buffer solution of 6.0 to the centrifuge tube full scale, the back is the shake well centrifuge tube intermittently.
7. the separation method of phosvitin is characterized in that in the birds, beasts and eggs according to claim 6, described intermittence the shake well centrifuge tube, its duration is 30 minutes.
8. the separation method of phosvitin in the birds, beasts and eggs according to claim 1, it is characterized in that, the described iron based nano-material that obtains the high phosphoprotein of specific adsorption lecithality, be meant: with iron is the polytetrafluoroethylene (PTFE) centrifuge tube that inorganic nano material mixes with rough lipovitellinin, under 5000 rev/mins, centrifugation 5 minutes, the lower sediment that obtains are the iron based nano-material of the high phosphoprotein of specific adsorption lecithality.
9. the separation method of phosvitin in the birds, beasts and eggs according to claim 1, it is characterized in that, described through boiling processing iron based nano-material, separate and obtain phosvitin, be meant: with the iron based nano-material of the high phosphoprotein of specific adsorption lecithality with after fully mixing at 1: 1 according to mass ratio between deionized water, boil under 100 ℃, the phosvitin that specificity is incorporated in the material fully dissociates.
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| CNB200710046474XA CN100559957C (en) | 2007-09-27 | 2007-09-27 | The separation method of phosvitin in the birds, beasts and eggs |
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| CN101133774A true CN101133774A (en) | 2008-03-05 |
| CN100559957C CN100559957C (en) | 2009-11-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936280A (en) * | 2012-11-21 | 2013-02-20 | 天津商业大学 | Extraction and purification method of phosvitin in eggs |
| CN107383187A (en) * | 2017-07-10 | 2017-11-24 | 华中农业大学 | A kind of combined extracting IgY from egg yolk, phosvitin, lecithin, the method for egg oil and de-fatted egg yolk powder |
-
2007
- 2007-09-27 CN CNB200710046474XA patent/CN100559957C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936280A (en) * | 2012-11-21 | 2013-02-20 | 天津商业大学 | Extraction and purification method of phosvitin in eggs |
| CN107383187A (en) * | 2017-07-10 | 2017-11-24 | 华中农业大学 | A kind of combined extracting IgY from egg yolk, phosvitin, lecithin, the method for egg oil and de-fatted egg yolk powder |
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| CN100559957C (en) | 2009-11-18 |
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Granted publication date: 20091118 Termination date: 20120927 |